package book;

public class BookList {

    private Book [] books = new Book[10];
    //表示当前书架上书的有效个数
    private int usedSize;

    //构造方法中初始化成员变量
    public BookList(){
        books[0] = new Book("三国演义","罗贯中",10,"名著");
        books[1] = new Book("西游记","吴承恩",81,"名著");
        books[2] = new Book("红楼梦","施耐庵",12,"名著");
        usedSize = 3;
    }

    public Book getBook(int pos){
        if(pos < 0){
            return null;
        }
        return books[pos];
    }

    public void setBook(int pos,Book book){
        books[pos] = book;
    }

    public int getUsedSize(){
        return usedSize;
    }

    public void setUsedSize(int usedSize){
        this.usedSize = usedSize;
    }

}
